Home / 123,409.24-170,304.90-66,820.60

Finding the Fourth Proportional to 123,409.24, 170,304.90 and 66,820.60

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Solution

The fourth proportional to 123,409.24, 170,304.90 and 66,820.60 is: 92,212.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,409.24 : 170,304.90 = 66,820.60 : x
  2. Step 2: Convert to fraction form
    123,409.24/170,304.90 = 66,820.60/x
  3. Step 3: Cross multiply
    123,409.24x = 170,304.90 × 66,820.60
  4. Step 4: Simplify right side
    123,409.24x = 11,379,875,600.94
  5. Step 5: Solve for x
    x = 11,379,875,600.94/123,409.24
  6. Step 6: Final answer
    x = 92,212.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.